PDF malware analysis — malicious · 7b4b75414cccbc73

MALICIOUS

PDF

229.5 KB Created: 2021-03-21 11:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: 47c23648624d8525eb9c54ba91a7e5cf SHA-1: 694359de0b2ffdc411f4b55352d55fc386440cfd SHA-256: 7b4b75414cccbc73ae955e955bf0b6b7c34abee22beff86a562626ced48524cf

144 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high severity heuristic indicating a clipboard command execution lure. This suggests the document is designed to trick the user into running commands, likely to download and execute a secondary payload from the embedded URL. The ML classifier's high confidence score and the specific lure heuristic strongly indicate a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9817

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://seumenha.ru/strik?utm_term=the+official+phreaker%2527s+manual+pdf PDF link annotation
- https://robavefozaxun.weebly.com/uploads/1/3/4/3/134379548/4421600.pdfIn PDF document text
- https://likerediweraj.weebly.com/uploads/1/3/4/6/134691167/8ec868003.pdfIn PDF document text
- http://opendouche.xyz/41482834944ah0wp.pdfIn PDF document text
- https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/3549072.pdfIn PDF document text
- https://sikefenuvip.weebly.com/uploads/1/3/4/0/134012601/5340837.pdfIn PDF document text
- http://brumbum3.xyz/emotional_blackmail_meaning_definitionqexcz.pdfIn PDF document text
- https://giruwaferelesed.weebly.com/uploads/1/3/4/8/134850821/c232fb06b891.pdfIn PDF document text
- http://sell-toclick.online/kisigixizutodewefilek8mp74.pdfIn PDF document text
- http://blancop.xyz/11662005609gq00c.pdfIn PDF document text
- http://ravasixojodari.mygamesonline.org/explain_the_relationship_between_phonetics_and_phonology.pdfIn PDF document text
- http://magazok.top/955876937224kokk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jovekus/auriculares_bluetooth_xiaomi_manual.pdfIn PDF document text
- https://02796127-04ec-4c85-b270-c6f7310ebb18.filesusr.com/ugd/ce0e6d_b34723e571294e11bf804172d39fb257.pdf?index=trueIn PDF document text
- https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_e416707237704e849bb4578f32b300ff.pdf?index=trueIn PDF document text
- http://kitilogokufalu.atwebpages.com/528408777.pdfIn PDF document text
- https://43fe4710-460a-4ad3-90dc-2dd795c51528.filesusr.com/ugd/a32c20_4e83f0bddcb9480d8b660f81bed2436c.pdf?index=trueIn PDF document text
- https://c33c3ce4-fa2f-4f19-9477-7a801b41b29e.filesusr.com/ugd/ebbcbd_5839b91986f547408268e287e96caf05.pdf?index=trueIn PDF document text
- https://e20d271a-53e3-41f9-9180-d6cd5f9fd148.filesusr.com/ugd/6cfc61_e1d2dc9bc96647c094a22f9c1e364cd1.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/genedesowul/ludejugof.pdfIn PDF document text
- https://s3.amazonaws.com/kefefetafij/rodelun.pdfIn PDF document text
- https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_e6eb7a1888574b279a4af8c3322997e5.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jazamerijekufol/70293592774.pdfIn PDF document text
- https://s3.amazonaws.com/dobikasukavu/fekur.pdfIn PDF document text
- http://rawigukegopafot.onlinewebshop.net/5252615189.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0003364b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3364B	5444 bytes
SHA-256: `ff4e7f9dec98158a5a0b8779400109d402f22888a264553fc511bd1a002ad1c9`
`font_01_sfnt_off000348ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x348AB	11916 bytes
SHA-256: `452c501ae32d924096afca9c98b96741660edcfcf8d8c5ab355fe38172c20761`
`font_02_sfnt_off00037188.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x37188	16204 bytes
SHA-256: `541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501`

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